Changes to car tax are set to be implemented on April 1 and almost nine drivers in 10 do not understand the new rules that are kicking in for diesel vehicles.

As of next month, if your car fails to meet the latest pollution standard you could face as much as an additional £500 on your tax bill.

The changes are linked to the Government's new set of Vehicle Excise Duty (VED) bands which were announced during the Autumn Budget last year.

The car tax rules are changing from April 1 (Image: Lynda Poulter)

In his speech, Chancellor Philip Hammond said from April 1, 2018, diesel cars that emit excessive pollution levels will have to pay more car tax than they currently do as the band will go up, Mirror Online reports.

This "excessive level" is measured against Euro 6 emission standards (the level considered harmful to health and the environment) - you can check where your car sits here.